spread

问题 This question already has answers here : Reshape multiple value columns to wide format (5 answers) Closed 7 months ago . IN R language how to convert data1 into data2 data1 = fread(" id year cost pf loss A 2019-02 155 10 41 B 2019-03 165 14 22 B 2019-01 185 34 56 C 2019-02 350 50 0 A 2019-01 310 40 99") data2 = fread(" id item 2019-01 2019-02 2019-03 A cost 30 155 NA A pf 40 10 NA A loss 99 41 NA B cost 185 NA 160 B pf 34 NA 14 B loss 56 NA 22 C cost NA 350 NA C pf NA 50 NA C loss NA 0 NA") I

问题 I know there're already many questions here asked about this topic. But after I looked over a few, all of them have only one 'measure' column. I still couldn't figure out how to do it with my data. My data look like the following with X1, X2 indicate different regions. so each column in this data set represents all the ages collected for a single region. age X1 X2 age 0 2 2 age 1 2 2 age 2 2 3 ... I want to reshape the data to wide form: age 0 age 1 age 2 X1 2 2 2 X2 2 2 3 ... To recreate the

问题 For some " extraction " operation I am trying to get the following snippet work, without using the spread operator, because IE 11 doesn't knows about spread operators. works in Chrome, but not IE 11: html_col_width =[{"targets":0, "width":50}, {"targets":1, "width":100},{"targets":2, "width":442}] ... some other code order: [ [response.order_by_column, response.order_by] ], columnDefs: [ ...html_col_width, {other: stuff}, {other: stuff} }) See columnDefs: ...html_col_width How can I achieve

问题 I have a State of objects in an Array (in my Redux Reducer). const initialState = { items: [ { id: 1, dish: "General Chicken", price: 12.1, quantity: 0 }, { id: 2, dish: "Chicken & Broccoli", price: 10.76, quantity: 0 }, { id: 3, dish: "Mandaran Combination", price: 15.25, quantity: 0 }, { id: 4, dish: "Szechuan Chicken", price: 9.5, quantity: 0 } ], addedItems: [], total: 0 }; I have an action to add 1 to the quantity of an object, such as {id:1, dish: Generals Chicken, price: 10.76,

问题 If you want to try these new functions ( pivot_wide and pivot long ), you need to install the development version of tidyr : devtools::install_github("tidyverse/tidyr") . But I have not managed to achieved it. I install a list of libraries except one, ( vctrs ) and I don't know if that's the problem. When I run the next code: mtcars_wide1 <- mtcars %>% pivot_wide(names_from = "am", values_from = "mpg") R couldn't find the function. enter image description here Can you recommend me something?

问题 This question already has answers here : How to reshape data from long to wide format (11 answers) Closed 2 years ago . I'm really sorry to ask this question again, because there are already many questions about this. However, none of the solutions worked for my problem. My data looks like this: id scale rater rating 1 A 1 5 1 B 1 7 1 A 2 3 1 B 2 6 2 A 1 4 2 B 1 3 2 A 2 2 2 B 2 1 I want to spread(rater, rating) In the end it should look like this: id scale 1 2 1 A 5 3 1 B 7 6 2 A 4 2 2 B 3 1

问题 This question already has answers here : Using spread with duplicate identifiers for rows (4 answers) Closed 2 years ago . There has been questions on this topic before here, but I am still struggling with spreading this. I would like so each state to have its own column of temperatures values. Here is a dput() of my data. I'll call it df structure(list(date = c("2018-01-21", "2018-01-21", "2018-01-20", "2018-01-20", "2018-01-19", "2018-01-19", "2018-01-18", "2018-01-18", "2018-01-17", "2018

问题 I have two tables (one for purchase order and the other for the invoice) and I want to distribute the quantity from the invoice table to the purchase order invoice quantity column but I want to match the exact quantity from the purchase order quantity. Here is how the table looks now And this is how I want it to look: How do I manage to do that? Thanks! Here is the excel attachment file: Book1.xlsx Update: Is it possible to do that for multiple codes? 回答1: With Invoice Quantity in the E2 cell

问题 I was leetcoding and suddenly I was wondering if what's the time complexity of spread in Array . I tried researching it but haven't found any answers or is it just I'm bad at my googling skills. I know it's just a basic or noob question but I was wondering if what is the time complexity of using spread in an Array in JavaScript . Is it linear: O(n)? Or is it constant: O(1)? Example of syntax below: let lar = Math.max(...nums) Appreciate if someone could help. Thanks in advance. 回答1: Spread

问题 I am missing spontaneous and easy conversion from long to wide and vice versa in Python. Imagine, I have a large tidy dataframe with a lot of property-columns and a single column that contains all the actual values like PropA ... PropZ Value green Saturn 400 green Venus 3 red Venus 2 . . The data itself is very nicely handled by keeping it tidy. But sometimes I have to perform some actions across certain properties (for instance it might be interesting to compare beeing red vs beeing green